To summerise what we have found:
1859: Marriage in Neilston, Renfrewshire, James Stevenson, 21, son of John Stevenson & Barbara Thomson....to....Catherine Campbell, 23, daughter of John Campbell & Margaret Johnstone/Selkirk
1860: Birth of John Stevenson, possibly Bridgeton, Glasgow. (24th May 1860)
1861: Census Calton, Glasgow. James,22, Catherine, 24, & John, 10 mths
1871: Census Calton, Glasgow, James, 33, Catherine, 35, John, 10, Maggie, 9, James, 7, Barbara, 5, Beatrice, 2, & Jane, 1.
1877: Marriage in Gorbals, Glasgow, John Stevenson, 18, (Fleshers Asst), son of James Stevenson (Master Flesher) & Catherine Campbell... to.... Margaret Murray,18, daughter of William Murray (Brass Finisher) & Mary McDonald.
1881: Census Kilmarnock, John, 20, (Butcher), Margaret, 21, James, 3, William, 3 weeks
1889: Death in Kilmarnock of Margaret Stevenson
1890: Marriage in Kilmarnock of John Stevenson, 30, (Widower)....to....Margaret Dunlop, 29, daughter of Samuel Dunlop & Jeanie(Jane) Bowman.
1891: Census Kilmarnock, John, 30, Maggie, 29, James, 12, William, 9, & John, 7.
1901 Census Kilmarnock, Margaret, 39, John, 18, Jeanie, 9, Margaret, 5, & Norman, 3
1906 Death Kilmarnock, Margaret Stevenson, age 45